Natural Aquarium Driftwood - Unique Shape?! Mysterious Charm of Natural Form - Submersion Confirmed

This driftwood has a slightly mysterious charm. Its interesting shape seems perfect for creating a unique aquatic landscape.
*Images taken with a ruler are included for size reference.

?? About the Driftwood
This driftwood was purchased from a shop and has undergone a time-consuming, amateur-level process of tannin removal and submersion testing.

◇ Amateur-level tannin removal (my personal method):
1. Rinse and brush clean.
2. Soak in water with baking soda for about 2 weeks (water changed regularly).
3. Boil (submersion is confirmed during this step).
4. Dry and brush clean.

While I strive for careful work, there may be some sand or dirt remaining in the driftwood that I couldn't remove.
Also, as it is a natural item, there may be cracks, scratches, or splits.
I have done some light sanding for the safety of living creatures, but this is a natural driftwood listed as close to its collected state as possible.
Recommended for interior decoration, and for keeping reptiles and amphibians.

? Please use at your own risk for underwater use in aquariums or with living creatures.
? The driftwood has been dried after submersion testing, so it will not sink immediately. Please treat it for submersion. (If you need help with submersion methods, please feel free to ask. I will assist you within the scope of my experience.)
? To help you visualize the driftwood's layout, images from as many angles as possible are provided. Some images show the driftwood in a non-self-standing state.
? To keep prices as low as possible, recycled cardboard boxes may be used for shipping.

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